In the OT, because the law of sin could never be broken, and the body of sins could not be destroyed, a person could certainly feel contrition, and remorse for any sin they committed, and go to the priest and offer the necessary sacrifice. But that was it.
Not until Jesus came and said "sin no more", and offered His blood as atonement, and with the outpouring of the Holy Spirit, could the law of sin be broken, and the body of sins destroyed.
What this means is, under the OT, a person was stuck in their sins, no matter how hard they tried. The call to an absolutely pure, sin-free life wasn't given because it wasn't possible. The stained conscience ever remained stained.
Under grace, the call is indeed given, and the expectation is sinlessness.
No more excuses under grace! God's divine power has been given to us, and with it, all things necessary so that we may live a life of godliness.
This is such a higher standard that OT law.
Yes, by walking in the Spirit, trusting the Lord, and not the arm of the flesh, this becomes possible.
But where does judgment begin? At the house of God, right? And what saith the Apostle?
"If the righteous scarcely be saved, where shall the ungodly and the sinner appear" (
1 Peter 4:13).
Here, Simon Peter makes it abundantly clear, that in this New Covenant of Grace, it is very difficult for even the righteous to be saved.
You can check all the translations and Greek words you want right here:
http://biblehub.com/1_peter/4-18.htm
It means what it means, folks.